LM2937ESX-5.0/NOPB

Current - Output:	500mA
Base Part Number:	LM2937
Supplier Device Package:	DDPAK/TO-263-3
Package / Case:	TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Reverse Polarity, Short Circuit
Control Features:	--
PSRR:	--
Current - Supply (Max):	20mA
Current - Quiescent (Iq):	2mA
Series:	--
Voltage Dropout (Max):	1V @ 50mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	26V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

LM2937ESX-5.0/NOPB is a linear voltage regulator from Texas Instruments, part of the PMIC (Power Management IC) family. It is suitable for battery-powered applications, and provides enhanced supply voltage to the power train. It is a single channel, low-dropout (LDO) regulator with adjustable output voltage. The part is also available in a space-saving package and features latch-up-proof protection against short-circuiting of the input, output and ground pins.

Application Field

LM2937ESX-5.0/NOPB is designed for use in battery-powered applications. It is suitable for portable medical equipment, wearables, industrial controllers, and other low-power applications. The device provides improved noise immunity and reduces over-voltage issues (LPVO). The low-dropout voltage allows for ground-level vs. battery-level supply, which is beneficial for improved power-saving.

Working Principle

The LM2937ESX-5.0/NOPB works on a basic principle: the power input is regulated on an adjustable output. This is achieved by the presence of adjustable voltage-dependent resistors. When the input voltage is greater than the selected output voltage, the device will decrease the flow of current, and vice versa.The device achieves this through the use of transistors and pass elements. The transistors control the current flow, while the pass element ensures that current is only allowed to flow in one direction. This combination of components ensures that the output voltage remains constant, no matter what the input voltage level is.The device also features adjustable voltage-dependent resistors to further enhance the protection of the power train. Additionally, the low-dropout voltage allows ground-level vs. battery-level supply. This eliminates the need for additional components, further reducing the power requirements of the system.

Advantages

LM2937ESX-5.0/NOPB allows for improved power saving and noise immunity. It also offers adjustable output voltage, which allows for easy customization of power requirements. The low-dropout voltage and latch-up-proof feature also add to the device\'s usefulness as a power train regulator.

Conclusion

The LM2937ESX-5.0/NOPB is a linear voltage regulator from Texas Instruments, part of the PMIC family. It features adjustable output voltage, low-dropout voltage, and latch-up-proof protection. The device is suitable for battery-powered applications and provides many advantages, such as improved power-saving and noise immunity.

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